Dialogue colours are hard to distinguish

[tClelford]

The behaviour of the <Paragraphs> tag is to generate a background colour for each speaker based on their name. This is cool, but the colours are a bit too muted and it makes it hard for people to distinguish between speakers at a glance. If you're annotating a conversation where different speakers have different possible annotations, this is quite a hinderance.

Here's the example from the Labelling Interface Config page:

Although they're different colours, it's difficult to tell them apart. This is a marked difference from the example in the docs:

A (very) simple solution to this is to increase the alpha value a little in the colour generator so the different colours are more distinct.

[tClelford]

I've created a PR with this simple solution but I'm not sure I'm able to link it #186

[niklub]

Thank you! PR is merged