linear_region with color arrays

[Shlomo Kut]

We wish to use vispy generate a real time Sonogram like display.

We need to push a line the the top of the visual and move the others lines down.

Currently we are using a list of line visuals to display our data the update rate is really slow for a large number (> 20) lines as each visual needs to redrawn.

The Linear Region would be ideal for our needs as we can easily rotate the colors as add the new color to the top. Performance is great for large numbers of lines. 

Except that the linear region it only accepts a single color for each line while we need to display an array of colors.

What would be involved in modifying the Linear Region to accept an array of colors? 

Thanks for your time.