Tab close button doesn't color properly when changing tab color #5780
Description
Environment
Windows build number: 10.0.18363.0
Windows Terminal version (if applicable): Built from master, latest commit: 1d72e77
Any other software?
Steps to reproduce
Color the tab using the tab color picker (right click and select Color...).
Choose a light color (when using the dark Terminal theme).
Expected behavior
The "X" on the tab should be the same color as the tab title text.
Actual behavior
The "X" doesn't change color depending on the tab color.
