Everything: Rich text redux (#5625)

* lord save me

* UI/ChatBox: Use the new `defStyle` param for `RenderMarkup`

The previous iteration didn't work because `AddMessage` can't inherit
its color from the PushColor (since we're not doing actual tag stacks
anymore).

* rebase touchup

Content.Server/Suspicion/SuspicionRoleComponent.cs

@@ -13,6 +13,7 @@ using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Players;
 using Robust.Shared.Utility;
+using Robust.Shared.Utility.Markup;
 using Robust.Shared.ViewVariables;
 
 namespace Content.Server.Suspicion
@@ -125,7 +126,7 @@ namespace Content.Server.Suspicion
             Dirty();
         }
 
-        void IExamine.Examine(FormattedMessage message, bool inDetailsRange)
+        void IExamine.Examine(FormattedMessage.Builder message, bool inDetailsRange)
         {
             if (!IsDead())
             {