use pre-multiplied alpha for cloak effects

mods/ra/rules/infantry.yaml

@@ -524,7 +524,8 @@ SNIPER:
 		CloakDelay: 120
 		CloakSound:
 		UncloakSound:
-		UncloakOnMove: yes
+		UncloakOnMove: true
+		IsPlayerPalette: true
 	DetectCloaked:
 		Range: 6
 	-MustBeDestroyed:

mods/ra/rules/palettes.yaml

@@ -26,8 +26,8 @@
 		G: 0
 		B: 0
 		A: 140
-	PaletteFromRGBA@cloak:
-		Name: cloak
+	PaletteFromRGBA@submerged:
+		Name: submerged
 		R: 0
 		G: 0
 		B: 0
@@ -65,6 +65,10 @@
 	PlayerColorPalette:
 		BasePalette: player
 		RemapIndex: 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95
+	PaletteFromPlayerPaletteWithAlpha@cloak:
+		BaseName: cloak
+		BasePalette: player
+		Alpha: 0.55
 	PlayerHighlightPalette:
 	MenuPaletteEffect:
 	RotationPaletteEffect@defaultwater:

mods/ra/rules/ships.yaml

@@ -34,6 +34,7 @@ SS:
 		CloakSound: subshow1.aud
 		UncloakSound: subshow1.aud
 		WhileCloakedUpgrades: underwater
+		Palette: submerged
 	Armament:
 		Weapon: TorpTube
 		LocalOffset: 0,-171,0, 0,171,0
@@ -88,6 +89,7 @@ MSUB:
 		CloakSound: subshow1.aud
 		UncloakSound: subshow1.aud
 		WhileCloakedUpgrades: underwater
+		Palette: submerged
 	Armament:
 		Weapon: SubMissile
 		LocalOffset: 0,-171,0, 0,171,0

mods/ra/rules/structures.yaml

@@ -561,6 +561,7 @@ HBOX:
 	Cloak:
 		InitialDelay: 125
 		CloakDelay: 60
+		IsPlayerPalette: true
 	Turreted:
 		ROT: 255
 	-QuantizeFacingsFromSequence:

mods/ra/rules/vehicles.yaml

@@ -740,6 +740,7 @@ STNK:
 		CloakDelay: 250
 		CloakSound: appear1.aud
 		UncloakSound: appear1.aud
+		IsPlayerPalette: true
 	DetectCloaked:
 		Range: 6
 	-MustBeDestroyed: