Beyond the Sun is now in beta!

[Mogri]

While I agree that it would be ideal to be able to distinguish everything at a glance, it's an Anglocentric approach to the problem. The advantage of tooltips is that they can be localized. Roughly half the game's players hail from non-English-speaking countries. Relying on tooltips may not be ideal for you, but it is the ideal solution for the other half of the world.

[buckybal]

Is it correct to say that a hybrid technology only needs one prerequisite that matches one of its colors, so if a tech has blue and yellow half-triangles on its left, and the 2 techs leading to its position have yellow and red triangles on their right ends, then the tech can be placed?

[Mogri]

The player who researches chooses which color from the triangles on the right side of the prerequisites. If the researcher chose yellow, the yellow/blue card would be eligible.