Question: Do different but related boosts stack?

So I'm assuming the answer to this question is "yes" but I haven't seen it discussed anywhere (though please let me know if I just missed it); I wanted to make sure that different damage boosts stack, ie. if I use the Power Boost (+10% match damage) & the Power Boost (+20% Yellow & Red Damage) I'm assuming that Yellow & Red damage is actually +30%. Does anyone know for sure if this is or is not the case? Thanks!