setUITheme incorrectly sets some alpha values

[dore0062]

Describe the bug setUItheme does not set alpha values correctly on some values, and defaults them to 128

So far only have found: chat_input_background chat_output_background

To Reproduce Steps to reproduce the behavior:

1. Export a default theme
2. setUItheme

Expected behavior The alpha values should be set correctly.

Lua Scripts & XML UI:

chat_output_background    #FFFFFF51
chat_input_background     #FFFFFF51

Tabletop Simulator Info (please complete the following information):

• OS: Windows 10.0.18362 Build 18362
  • Processor: AMD Ryzen 5 2600 Six-Core Processor, 3400 Mhz, 6 Core(s), 12 Logical Processor(s)
  • Total Physical Memory 16.0 GB
• Version: v12.2.2

Known workarounds Do not set the chat background values, remove them from the exporter.

Additional context The exporter includes these values at 33, but defaults them to 128, making them opaque. Will confuse new users.

[dore0062]

Fixed in v12.3