Themes generated by Themer do not look right on VS2019
# Description

The theme is broken on VS2019

# To reproduce

Steps to reproduce the behavior:

1. use this theme https://themer.dev/?activeColorSet=dark&colors.dark.shade0=%2325004a&colors.dark.shade7=%23b062ff&colors.dark.accent0=%23ff4646&colors.dark.accent1=%2358fa4b&colors.dark.accent2=%23ffff00&colors.dark.accent3=%2300ff00&colors.dark.accent4=%2300ffff&colors.dark.accent5=%2300ffff&colors.dark.accent6=%23ff00ff&colors.dark.accent7=%23ff00ff&colors.dark.shade3=%23b56aff&colors.dark.shade1=%239a35ff&colors.light.accent1=%23ff2d2d&calculateIntermediaryShades.dark=true
2. download the theme for visual studio
3. apply it like usual
4. witness the horror

## Screenshots

![Here's how it looks like](https://user-images.githubusercontent.com/43522532/127902268-fda22dce-5224-4212-9ccf-514b25607a8b.png)


## Expected behavior

Visual Studio 2019 having proper colors