Solution: in the end of file "colors.tdesktop-theme" add
sideBarBg: pBg; // filters side bar background
sideBarBgActive: pSelection; // filters side bar active background
sideBarBgRipple: rippleBgHeavy; // filters side bar ripple effect
sideBarTextFg: pYellow; // filters side bar text
sideBarTextFgActive: pPink; // filters side bar active item text
sideBarIconFg: pComment; // filters side bar icon
sideBarIconFgActive: pPurple; // filters side bar active item icon
sideBarBadgeBg: pComment; // filters side bar badge background
sideBarBadgeBgMuted: pSelection; // filters side bar unimportant badge background
sideBarBadgeFg: pFg; // filters side bar badge text
Please update telegram theme. Telegram added new future called Chat Folders
Issue: https://github.com/dracula/telegram/issues/14
Solution: in the end of file "colors.tdesktop-theme" add