API and possibility to fully color the tabs (focused, unfocused, opacity, text, background)

Type: Feature Request

API and possibility to fully color the tabs (focused, unfocused, opacity, text, background) - to be able to difference the most used and the ones opened but not so much used and so on -- possiblity also to have them only underlined. thanks

VS Code version: Code 1.133.0 (a5b500951314efd502d07465bd138dfbd714a960, 2026-08-11T22:14:08Z)
OS version: Windows_NT x64 10.0.26200
Modes: Unsupported

System Info

|Item|Value|
|---|---|
|CPUs|AMD Ryzen 9 9950X 16-Core Processor (32 x 4300)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x10de, DEVICE=0x2484 [NVIDIA GeForce RTX 3070], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.9186 *ACTIVE*
GPU1: VENDOR= 0x1002, DEVICE=0x13c0 [AMD Radeon(TM) Graphics], DRIVER_VERSION=32.0.21043.19003
GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.8972
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgpu: enabled
webnn: disabled_off|
|Load (avg)|undefined|
|Memory (System)|31.06GB (10.55GB free)|
|Process Argv|--crash-reporter-id 7b123be4-ea20-4604-a02e-bbb5e2279f2a|
|Screen Reader|no|
|VM|0%|
Extensions (27)

Name|Identifier|Author|Version
---|---|---|---
Claude Code for VS Code|anthropic.claude-code|Anthropic|2.1.234
Tailwind CSS IntelliSense|bradlc.vscode-tailwindcss|bradlc|0.16.0
Database Client JDBC|cweijan.dbclient-jdbc|cweijan|1.4.6
Database Client|cweijan.vscode-database-client2|cweijan|9.0.2
markdownlint|davidanson.vscode-markdownlint|DavidAnson|0.62.1
Git History|donjayamanne.githistory|donjayamanne|0.6.20
Auto Close Tag|formulahendry.auto-close-tag|formulahendry|0.5.15
Auto Complete Tag|formulahendry.auto-complete-tag|formulahendry|0.1.0
Auto Rename Tag|formulahendry.auto-rename-tag|formulahendry|0.1.10
Edit CSV|janisdd.vscode-edit-csv|janisdd|0.11.9
Odoo Snippets|jigar-patel.odoosnippets|jigar-patel|1.5.0
Git Graph|mhutchie.git-graph|mhutchie|1.30.0
Container Tools|ms-azuretools.vscode-containers|ms-azuretools|2.4.5
Docker|ms-azuretools.vscode-docker|ms-azuretools|2.0.0
Python Debugger|ms-python.debugpy|ms-python|2026.6.0
Python|ms-python.python|ms-python|2026.4.0
Pylance|ms-python.vscode-pylance|ms-python|2026.3.1
Dev Containers|ms-vscode-remote.remote-containers|ms-vscode-remote|0.466.0
Color Highlight|naumovs.color-highlight|naumovs|2.8.0
indent-rainbow|oderwat.indent-rainbow|oderwat|8.3.1
Owl Vision|odoo.owl-vision|Odoo|0.1.0
Codex – OpenAI’s coding agent|openai.chatgpt|openai|26.814.41407
Prisma|prisma.prisma|Prisma|31.11.0
Nunjucks|ronnidc.nunjucks|ronnidc|0.3.1
Stylelint|stylelint.vscode-stylelint|stylelint|2.2.1
Odoo IDE|trinhanhngoc.vscode-odoo|trinhanhngoc|0.50.2
vscode-icons|vscode-icons-team.vscode-icons|vscode-icons-team|12.19.0

A/B Experiments

```
vsliv368:30146709
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
4f60g487:31327383
envsactivate1:31551504
gh487529:31544284
cloudbuttont:31379625
42190218_ostrepl:31403339
bj468946:31457056
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
8hhj4413:31478653
ge8j1254_inline_auto_hint_haiku:31490510
cp_cls_c_1081:31454833
conptydll_true:31498968
e9c30283:31461165
test_treatment2:31471001
46204921:31447328
control_6dc23131:31555649
t-26112-aa:31454027
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
h08i8180_copy:31475368
ddid_t:31478206
hmra_i5g22:31518061
g35_d1382936:31566472
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
j0d79568:31499440
jb_cp_cls_t_632:31543129
56dj4588:31512888
32d76977:31512328
ha629193:31508444
jh5f2457_c:31540921
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
jf4hg949:31526829
ahp-both-windows:31556933
sessions_5:31532894
hjji5903:31534458
f412h606:31551416
9gg7f176:31542112
enable_editor_pane_layout:31567814
allow-none:31555437
fd5dc207:31551400
36h42362:31564511
c7c27ce7:31554789
1h923230:31564177
0dg73464:31554319
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
0d8dfbc3:31566037
a1hcc538:31559322
0c1h4866:31566224
vrbsty_tr:31561058
session-mark-done:31558131
18bic794_t_pref:31563076
5b8j3302:31564601

```