Here is the second solo/heroic zone of Vaashkaani, plus the signature/mission zone. It re-uses the map from Argent Sanctuary for the first floor, and it re-uses the Chromatic Chamber map for the last room.
I've double-checked the XML spacing to make sure it matches the core mapstyles.
Code:
<ImageStyle Name="exp20_dun_djinn_palace_02_solo_0" displayname="Vaashkaani: Golden Rule [Solo] (1st Floor)" zonerect="-917, -411, 161, 194" heightmax="12">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_1.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_easy_0" displayname="Vaashkaani: Golden Rule [Heroic I] (1st Floor)" zonerect="-917, -411, 161, 194" heightmax="12">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_1.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_0" displayname="Vaashkaani: Golden Rule [Heroic II] (1st Floor)" zonerect="-917, -411, 161, 194" heightmax="12">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_1.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_solo_1" displayname="Vaashkaani: Golden Rule [Solo] (2nd Floor)" zonerect="-917, -411, 161, 194" heightmin="12" heightmax="40">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_2.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_easy_1" displayname="Vaashkaani: Golden Rule [Heroic I] (2nd Floor)" zonerect="-917, -411, 161, 194" heightmin="12" heightmax="40">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_2.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_1" displayname="Vaashkaani: Golden Rule [Heroic II] (2nd Floor)" zonerect="-917, -411, 161, 194" heightmin="12" heightmax="40">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_2.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_solo_2" displayname="Vaashkaani: Golden Rule [Solo] (3rd Floor)" zonerect="-917, -411, 161, 194" heightmin="40">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_3.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_easy_2" displayname="Vaashkaani: Golden Rule [Heroic I] (3rd Floor)" zonerect="-917, -411, 161, 194" heightmin="40">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_3.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_02_2" displayname="Vaashkaani: Golden Rule [Heroic II] (3rd Floor)" zonerect="-917, -411, 161, 194" heightmin="40">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_3.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_sig_0" displayname="Vaashkaani: Alcazar Crescendo (Throne)" zonerect="-917, -411, 161, 194" availablepriority="1">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_3.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_sig_mission_0" displayname="Vaashkaani: Alcazar Crescendo [Solo] (Throne)" zonerect="-917, -411, 161, 194" availablepriority="1">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_3.dds" SourceRect="0,0,912,512" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_sig_1" displayname="Vaashkaani: Alcazar Crescendo (Chromatic)" zonerect="-404, -431, -203, -280">
<ImageFrame Source="images/maps/map_exp20_dun_prelude_raid_01.dds" SourceRect="0,0,800,600" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_sig_mission_1" displayname="Vaashkaani: Alcazar Crescendo [Solo] (Chromatic)" zonerect="-404, -431, -203, -280">
<ImageFrame Source="images/maps/map_exp20_dun_prelude_raid_01.dds" SourceRect="0,0,800,600" />
</ImageStyle>