Remove/Improve theme for Bonita Studio

Hello !

I have installed Garuda with the beautiful Dr460nized theme and I have a theming issue with one of my applications I use for development purpose : Bonita Studio.

The issue is that the dark theme doesn't properly apply as the application doesn't have a dark theme pre built so it's kind of unusable :

Is there a way to improve this render or disable the auto theming for this application ?

I found a post about Libreoffice for the same issue but the answer was just to use the LibreOffice dark theme.

Thank you in advance !

inxi -Fza
System:    Kernel: 5.13.9-zen1-1-zen x86_64 bits: 64 compiler: gcc v: 11.1.0  
parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen root=UUID=f6f170c6-d407-4bd2-b554-b3853d3d11ab rw  
[email protected] quiet splash rd.udev.log_priority=3 vt.global_cursor_default=0
systemd.unified_cgroup_hierarchy=1 loglevel=3
Desktop: KDE Plasma 5.22.4 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 vt: 1 dm: SDDM Distro: Garuda Linux  
base: Arch Linux  
Machine:   Type: Desktop Mobo: Micro-Star model: B350M BAZOOKA (MS-7A38) v: 1.0 serial: <filter> UEFI: American Megatrends  
v: 1.F0 date: 07/07/2018  
CPU:       Info: Quad Core model: AMD Ryzen 3 2200G with Radeon Vega Graphics bits: 64 type: MCP arch: Zen family: 17 (23)  
model-id: 11 (17) stepping: 0 microcode: 810100B cache: L2: 2 MiB  
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 28001  
Speed: 1426 MHz min/max: 1600/3500 MHz boost: enabled Core speeds (MHz): 1: 1426 2: 2543 3: 1935 4: 1806  
Vulnerabilities: Type: itlb_multihit status: Not affected  
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full AMD retpoline, IBPB: conditional, STIBP: disabled, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:  Device-1: AMD Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] vendor: Micro-Star MSI driver: amdgpu
v: kernel bus-ID: 38:00.0 chip-ID: 1002:15dd class-ID: 0300
Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: amdgpu,ati unloaded: modesetting
alternate: fbdev,vesa display-ID: :0 screens: 1
Screen-1: 0 s-res: 5760x1454 s-dpi: 96 s-size: 1521x384mm (59.9x15.1") s-diag: 1569mm (61.8")
Monitor-1: HDMI-A-0 res: 1920x1080 hz: 60 dpi: 96 size: 509x286mm (20.0x11.3") diag: 584mm (23")
Monitor-2: DisplayPort-0 res: 1920x1080 hz: 60 dpi: 94 size: 521x293mm (20.5x11.5") diag: 598mm (23.5")
Monitor-3: HDMI-A-1 res: 1920x1200 hz: 60 dpi: 94 size: 518x324mm (20.4x12.8") diag: 611mm (24.1")
OpenGL: renderer: AMD Radeon Vega 8 Graphics (RAVEN DRM 3.41.0 5.13.9-zen1-1-zen LLVM 12.0.1) v: 4.6 Mesa 21.1.6
direct render: Yes
Audio:     Device-1: Advanced Micro Devices [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio driver: snd_hda_intel v: kernel
bus-ID: 38:00.1 chip-ID: 1002:15de class-ID: 0403
Device-2: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: Micro-Star MSI driver: snd_hda_intel v: kernel
bus-ID: 38:00.6 chip-ID: 1022:15e3 class-ID: 0403
Sound Server-1: ALSA v: k5.13.9-zen1-1-zen running: yes
Sound Server-2: JACK v: 1.9.19 running: no
Sound Server-3: PulseAudio v: 15.0 running: no
Sound Server-4: PipeWire v: 0.3.33 running: yes
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Micro-Star MSI driver: r8169 v: kernel
port: f000 bus-ID: 1b:00.0 chip-ID: 10ec:8168 class-ID: 0200
IF: enp27s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    Local Storage: total: 2.05 TiB used: 536.99 GiB (25.6%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: Samsung model: SSD 850 EVO 250GB size: 232.89 GiB block-size: physical: 512 B
logical: 512 B speed: 6.0 Gb/s type: SSD serial: <filter> rev: 2B6Q scheme: GPT
ID-2: /dev/sdb maj-min: 8:16 vendor: Seagate model: ST1000DM010-2EP102 size: 931.51 GiB block-size:
physical: 4096 B logical: 512 B speed: 6.0 Gb/s type: HDD rpm: 7200 serial: <filter> rev: CC43 scheme: GPT
ID-3: /dev/sdc maj-min: 8:32 type: USB vendor: Seagate model: OneTouch SSD size: 931.51 GiB block-size:
physical: 512 B logical: 512 B type: SSD serial: <filter> rev: 0001 scheme: MBR
Partition: ID-1: / raw-size: 465.85 GiB size: 465.85 GiB (100.00%) used: 35.86 GiB (7.7%) fs: btrfs dev: /dev/sdb2
maj-min: 8:18
ID-2: /boot/efi raw-size: 954 MiB size: 952.1 MiB (99.80%) used: 5.9 MiB (0.6%) fs: vfat dev: /dev/sda4
maj-min: 8:4
ID-3: /home raw-size: 465.85 GiB size: 465.85 GiB (100.00%) used: 35.86 GiB (7.7%) fs: btrfs dev: /dev/sdb2
maj-min: 8:18
ID-4: /var/log raw-size: 465.85 GiB size: 465.85 GiB (100.00%) used: 35.86 GiB (7.7%) fs: btrfs dev: /dev/sdb2
maj-min: 8:18
ID-5: /var/tmp raw-size: 465.85 GiB size: 465.85 GiB (100.00%) used: 35.86 GiB (7.7%) fs: btrfs dev: /dev/sdb2
maj-min: 8:18
Swap:      Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default)
ID-1: swap-1 type: zram size: 14.59 GiB used: 63.5 MiB (0.4%) priority: 100 dev: /dev/zram0
Sensors:   System Temperatures: cpu: 44.8 C mobo: N/A gpu: amdgpu temp: 44.0 C
Fan Speeds (RPM): N/A
Info:      Processes: 284 Uptime: 3h 20m wakeups: 0 Memory: 14.59 GiB used: 10.12 GiB (69.4%) Init: systemd v: 249
tool: systemctl Compilers: gcc: 11.1.0 clang: 12.0.1 Packages: pacman: 1339 lib: 339 Shell: fish v: 3.3.1
default: Bash v: 5.1.8 running-in: konsole inxi: 3.3.06

It's a GTK2 app, so this may help:

Open System Settings
Appearance > Application Style > Configure GNOME / GTK Application Style (button)

Select "default" from the GTK theme drop-down menu. See if it looks right with the preview button.

Click the Apply button.

You may need to log out and back in to get the full effect on applications, I can't remember if that bug's been squashed or not yet.


Kvantum works very well for theming GTK applications. I've used it in the past to configure QT applications while in a GNOME environment. There is also this (taken from the Arch Wiki):
Uniform look for Qt and GTK applications - ArchWiki (