Accessibility for color blind people

[tsc]

In the current interface associations differ only in color.
This is unfortunate for color blind people.

There should be another difference in renderings of associations.
I see two approaches for a solution

1. unique style of edges for each association type
2. show text in the topicmap

[Malte]

hi thilo, as you suggest: the default recommendation for software developers is to not rely on color code to represent different semantics to the user at all.

but: if there are not many different type of edges, an application devleoper could optimzie the se of colors used for edges in regards to the colors brightness.

so you would suggest:

1) use different "stroke"/"line"-styles and
2) do not rely on a stroke but additionally use text (in or near the stroke) to display the "assocation type name" in between two nodes?

thanks & cheers.