TrConcat<TRANSITION, INTERMEDIATE, TRANSITION, ...>
Concatenates any number of transitions. If an intermediate color is provided, we first transition to that color, then we transition away from it in the next transition. If no intermediate color is provided, the first and second transition will both transition from the same input colors. If for instance both the first and second transitions are TrFades, then there will be a jump in the middle as the transition will go back and start from the beginning. Using TimeReverseX on the second transition will avoid this, as the second transition will then run backwards.