How to make LOL custom chroma

I forgot to tell you something the file that you want to custom to make chroma colour change is :(character name)_skin(number)_tx_cm.pie_c_10_19.png in this video it is :pyke_skin25_tx_cm.pie_c_10_19.png other thing like load screen is optional to custom Obsidian download link : https://github.com/Crauzer/Obsidian/releases XnConvert download link : https://xnconvert.en.softonic.com/download LCS-manager download link : https://github.com/moonshadow565/lolcustomskin-tools/releases Killer skin website : https://killerskins.com