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For a horse to be liver it has to be red based, so it has to has ee at the start of his genetics, because e results in a red based horse, with red pigment (chestnut). E is a dominant gene, meaning that one copy of it results in a black based horse, with black pigment (so Ee is a black based horse but EE as well).
To be a liver chestnut, it also has to have at least 1 copy of DP, along with two other 'darkening' genes such as sty or S+. Ill find the topic explaining DP in a minute and add the link here. That is what turns a normal dark chestnut into a liver!

With the addition of other genes, other combinations of color can occur. Each part/letter in the genome results in some modification of the horses coat color. You have dominant genes (written as a capital letter), that only need 1 copy to show/express themselves and change the horses color, and recessive genes (written in small letters), that need two copies to show/express themselves and change the horses color.

For example, if we look at the next gene in the genome, the letter A, is the agouti gene. This pushes the black pigment 'away' to the outer points of the horse so on a black based horse (Ee or EE or eE), having one copy of Agouti/A (as it is dominant) will results in a bay horse. You can also have a (if you have two of these your horse stays black, no pigment is pushed away), A+ (also dominant, so one copy will result in a wild bay horse, it is also dominant over A), or At (the 'brown' gene, when you have an Ata, aAt or AtAt it results in a brown horse). When you have a red based horse (ee), all the agouti genes (A, a, A+, At) do not have any effect, as the red based horse does not have any black pigment that can be 'pushed' away.

Unfortunately I dont have time to discuss each gene separately, but I hope to show that the genetics of a horse is made up of different combinations of genes, resulting in a specific color. If you know what each seperate part does, then you can also figure out the full genetics/color of a horse. Most genes show up in the color test, only a few are so called 'hidden' genes, these only express themselves visually on the horse. These genes are Snowflake, Gulastra Plume and Kit Promotor. DP is a hidden gene too, however when a dark chestnut or palomino has DP it changes their color name into liver chestnut or chocolate palomino, therefore having a confirmation that the horse carries DP.

If you look at your horses genome, you can click on every letter that there is and be taken to the genetics guide, with information about what that gene is, what is does and examples of how it expresses.

It can take some time to figure it out, that's true, but it isn't that hard if you get the basics right and understand how it 'works'. I hope this helped a bit in explaining the basics. And, what is also very useful after you've clicked the different letters and read about them is looking at the different horses and their genetic by using the search. All color testable genes can be searched by, so play around with that to help understand the different color combinations!
Oh and dont be afraid to ask questions about anything, we're all more than happy to help out! There are no stupid questions!

Oh and Corona is absolutely right, Shimmey is already a liver. Bronze dun not. However, we know that the Bronze HH is a herd helper that has guaranteed 1 copy of DP. So that part is check on Bronze Dun. However, he is a black based horse (Ee bay), to become a liver chestnut you need to change his copy of E to e, than you'll have a red based horse (ee).

I dont have access to my PC right now so I cannot search for the topics on different genetics, I'll add these later!
However you can search for the DP Codex in the meantime, this is an awesome guide with an in depth explanation how DP works and so many pictures of DP affecting the different coat colors!

I don't know why i keep forgetting that my liver baroque is on this account, I have a bay on the other. Thank you for all the input, i have some thinking to do now. I do really like the white spotted livers so maybe i Will try that out if I can fund it.
Thank you both for the input

Jessj thank you for examples your boys are gorgeous. I even have a couple foals from dark chocolate. I do love the looks of the kit m and sb2. Satin is pretty as well. Prices are over my budget at the moment though.

This is my other account I frogot I logged in here.