How to override processing of specific types

[jadejr]

I made somewhat of a bad design design a long time ago and choose the bytes type to represent a set of color values. It looks like it's possible (maybe?) to extend ts-proto to change the processing of these fields, but I can't tell how.

I have entries in my protobuf messages that look like this:

 bytes color = 4 [(nanopb).max_size = 4, (nanopb).fixed_length = true]; // Color for the led strip in RGBW  in brightness value (0-255) in [R, G, B, W] order

What i'd like to do is end up with a type that looks like a tuple [number, number, number, number] and then have encode/decode to turn it back into a Uint8Array and array respectively. is that possible?

I admit to being somewhat unfamiliar here with the best protobuf approaches, since most of the discussions tend to be related to remote services, rather than say dealing with embedded devices.