Add blocks for built-in JavaScript functions for custom colors in score/life displays.

[alex-kulcsar]

Describe the solution you'd like Surface the built-in JavaScript functions for changing the score/life coloring as blocks.

Describe alternatives you've considered I've written an extension with helper functions to do so.

Additional context Refer to https://forum.makecode.com/t/petition-for-coloring-info-blocks/30460/4 for existing extension.