整理代码，微调节日主题变色逻辑

Zframework/init.lua

@@ -419,7 +419,7 @@ function love.run()
 	local SCN=SCN
 	local SETTING=SETTING
 
-	local TIME=love.timer.getTime
+	local TIME=TIME
 	local STEP,WAIT=love.timer.step,love.timer.sleep
 	local MINI=love.window.isMinimized
 	local PUMP,POLL=love.event.pump,love.event.poll

Zframework/widget.lua

@@ -984,7 +984,7 @@ function WIDGET.set(list)
 			end
 			local rnd=math.random
 			for _,W in next,list do
-				if W.color then
+				if W.color and not W.fText then
 					W.color=rnd()<.3 and c1 or rnd()<.5 and c2 or c3
 				end
 			end