Fix `Tty.gray`.
Fix `Tty.gray`.

muellermartin/dist,JCount/brew,reitermarkus/brew,alyssais/brew,palxex/brew,EricFromCanada/brew,JCount/brew,reelsense/brew,Linuxbrew/brew,ilovezfs/brew,amar-laksh/brew_sudo,zmwangx/brew,konqui/brew,bfontaine/brew,muellermartin/dist,bfontaine/brew,Linuxbrew/brew,gregory-nisbet/brew,rwhogg/brew,aw1621107/brew,DomT4/brew,konqui/brew,amar-laksh/brew_sudo,claui/brew,claui/brew,sjackman/homebrew,pseudocody/brew,Linuxbrew/brew,MikeMcQuaid/brew,reitermarkus/brew,nandub/brew,reitermarkus/brew,aw1621107/brew,jmsundar/brew,sjackman/homebrew,mahori/brew,Homebrew/brew,DomT4/brew,muellermartin/dist,claui/brew,reitermarkus/brew,Linuxbrew/brew,reelsense/brew,hanxue/linuxbrew,DomT4/brew,palxex/brew,reelsense/brew,tonyg/homebrew,EricFromCanada/brew,jmsundar/brew,ilovezfs/brew,pseudocody/brew,nandub/brew,maxim-belkin/brew,hanxue/linuxbrew,ilovezfs/brew,sjackman/homebrew,mgrimes/brew,claui/brew,gregory-nisbet/brew,konqui/brew,hanxue/linuxbrew,vitorgalvao/brew,EricFromCanada/brew,rwhogg/brew,Homebrew/brew,maxim-belkin/brew,mgrimes/brew,MikeMcQuaid/brew,vitorgalvao/brew,mahori/brew,gregory-nisbet/brew,vitorgalvao/brew,JCount/brew,Homebrew/brew,sjackman/homebrew,MikeMcQuaid/brew,tonyg/homebrew,rwhogg/brew,Homebrew/brew,DomT4/brew,mahori/brew,alyssais/brew,pseudocody/brew,bfontaine/brew,zmwangx/brew,JCount/brew,palxex/brew,mgrimes/brew,amar-laksh/brew_sudo,nandub/brew,aw1621107/brew,EricFromCanada/brew,tonyg/homebrew,jmsundar/brew,vitorgalvao/brew,konqui/brew,maxim-belkin/brew,mahori/brew,nandub/brew,alyssais/brew,MikeMcQuaid/brew,zmwangx/brew