Syntax color for YAML seems to be off

[Hellcode48]

I noticed with the latest Update to Seti Syntax YAML colors seem to all be the same except for integers, is this how the theme is now, or is a bug?

can you also add a Theme setting for highlight color?

[jesseweed]

I don't have anything specific in for YAML highlight yet, so I'll take a look at adding that next.

[conlon]

+1 this looks even worse with the default theme of blue...everything is blue (see issue #6 )

[joshnewlinatclearobject]

+1 requesting yaml highlights

[counterbeing]

This looks like a duplicate of issue #6. But yeah, I'd love a little more highlighting to help me spot typos. 👍