With Libronix it was possible to configure the color of a KeyLinked data type.

Faithlife (née Logos) preconfigured several principle data types with starkly contrasting primary colors which, with certain lexicons, could result in a display of black main text interspersed with many linked elements colored blue, red, and green. That result was called “Fruitcake” by some. As with the annual holiday comestible the appeal is not universal.
I would like to approximate this type of UI customization using visual filters. In particular I would like to change the color of the sigla in an apparatus and associated texts.
For example, presently the SESB apparatus marks are difficult to distinguish.

I would like to render the apparatus marks in a more easily discerned color.

Can anyone provide an example of how to accomplish this with Logos 6?
Previously discussed here and referred to here.
Hat tip to Romulo de Amorim Correa and Damian McGrath for the images used above.