Oh for sure! It's pretty simple. The dice are symmetric (as opposed to Genesys dice which are asymmetric), with two symbols on each die type. Basically, the spread goes like this:

d6: Yellow has Plus and Circle, Purple has Minus and Triangle.

1. Blank
2. Blank
3. Plus / Minus
4. Plus / Minus
5. Circle / Triangle
6. Both Symbols

d10: Mint has Plus and Circle, Red has Minus and Triangle.

1. Blank
2. Plus / Minus
3. Plus / Minus
4. Plus / Minus
5. Double Plus / Double Minus
6. Circle / Triangle
7. Circle / Triangle
8. Both Symbols
9. Both Symbols
10. Double Circle / Double Triangle

I do have the symbols et al in Affinity files, so they are easy to extract as needed, but for Tabletop Simulator you also need the full spreads laid out on specific PNGs (which may be useful as well). I won't post those here, but they will make it into the Itch page for these things. 

I'm obviously planning on releasing all the Affinity files et al into the wild as well, so if people want to make alternative or additional dice using the symbols, they can.

I can also go further into the game design considerations of the spreads, if necessary. The only thing I'm not completely sold on yet is a name. I originally thought of something like Duality Dice or Protean Dice, but I'm not entirely sure.

The entire core idea with the dice is to provide an alternative to number-based dice, and they are built to be versatile. For this reason, I opted to create symmetrical sets so they can be matched 1/1 without any math futzing.

In Genesys the dice are used in very simple way: You roll Green/Yellow/Blue dice, and compare them to Purple/Red/Black dice, and each has symbols that correspond and negate the other. Symbols come in three types: "Success/Failure", "Triumph/Despair", and "Advantage/Threat", and which symbol is more represented (positive or negative) is the primary one, so if you have more Successes than Failures, the check is successful, but if also have more Threat than Advantage, it's "Success with Threat", i.e it has some additional complications. Triumph/Despair didn't negate each other, they could stack, so you could have a situation where "You grievously wound the opponent, but your sword gets stuck" right in the mechanics of the game. 

Genesys dice are meant for this specific style of use case, so they adjusted the dice faces a little, where the "bad" dice have more Threat symbols and less Failure symbols, so it's more likely that players get Success with Threat.

The trick with the symbol dice is that as a dice pool, it means each die is basically a coinflip: The less Successes you roll, the more Advantage you roll, in Genesys terms.

My plan on how to use these dice is to, yes, replicate the Genesys die system in an open source format, but ALSO allow for different kinds of expression: Make Red and Cyan dice represent Hot and Cold in a relationship game, make the Triangle symbols represent Success with Danger, make the Plus and Minus symbols represent popularity in the eyes of the people... Whatever.

Effectively, the idea I have is to allow the creation of a second vector to any dice pool game that uses them, and most importantly allowing each die result have up to two symbols, where as unless you have color dice and start doing like "Red 0s on d10s", you can't really represent results more complicated than linear.

ETA: Thanks for the recommendation on VTT.io, BTW. I'll look into it!