[BUG] tags and flags in history have white font. High contrastLight themes unsupported.

[generalredneck]

1. Description

This extension fails to take into account styling for light high contrast themes when it comes to the flags that show tags, branches, and stashes in the history. It shows them with white text... usually on a white background.

2. Steps to Reproduce

Change theme to light modern
view any flag that shows a branch or tag name.

3. Expected Behavior

I expect git graph plus to have black text in tag flags on high contrast themes

4. Actual Behavior

While the tags show up with black text under normal light themes such as

• Light modern
• Light Visual Studio
• Github Light
• Solorized Light
• Light Color Blind
• Contributed light themes like E-ink 2

It doesn't show up in

• Github Light High Contrast
• Light High Contrast
• contributed themes liek Monokai extreme light

5. Screenshots or Logs

6. Environment

Version: 1.133.0
Commit: a5b500951314efd502d07465bd138dfbd714a960
Date: 2026-08-11T22:14:08Z
Electron: 42.8.0
ElectronBuildId: 14845705
Chromium: 148.0.7778.280
Node.js: 24.18.0
V8: 14.8.178.38-electron.0
@github/copilot: 1.0.79-6
@github/copilot-sdk: 1.0.9
OS: a5b500951314efd502d07465bd138dfbd714a960
git graph plus: 0.7.3

7. Additional Context