Theme skin for eachwebpart in webpartzone

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Hi.
So, in a webpartzone I put 3 webusercontrols like the following code:

<asp:WebPartZone SkinID="wp1" ID="WebPartZone1" Runat="server" Height="75px"
Width="382px" DragHighlightColor="244, 198, 96" HeaderText="WebPart"
Padding="5" PartChromeType="TitleAndBorder">
<PartTitleStyle BackColor="LightSteelBlue"
ForeColor="Black"></PartTitleStyle>
<CloseVerb ImageUrl="~/images/icon_delete_over.gif"></CloseVerb>
<ZoneTemplate>
<uc1:WebUserControl1 Runat="server" ID="WebUserControl1_1" Title="UC1" />
<uc2:WebUserControl2 Runat="server" ID="WebUserControl2_1" Title="UC2" />
<uc3:WebUserControl3 Runat="server" ID="WebUserControl3_1" Title="UC3" />
</table>
</ZoneTemplate>
<RestoreVerb ImageUrl="~/images/icon_file_over.gif"></RestoreVerb>
<MinimizeVerb ImageUrl="~/images/icon_minimize.gif"></MinimizeVerb>
<PartStyle BorderColor="Silver" BorderStyle="Solid" BorderWidth="1px"
BackColor="WhiteSmoke" CellSpacing="0" CellPadding="0"></PartStyle>
</asp:WebPartZone>

How can I do a skin for each webpart in my ski file?
Here my test.skin file:
<asp:Label runat="server" ForeColor="red" Font-Size="14pt"
Font-Names="Verdana" />
<asp:button runat="server" borderstyle="Solid" borderwidth="2px"
bordercolor="MidnightBlue" backcolor="GhostWhite" Font-Size="10px"/>

Something like:
<asp:Webpart runat="server" ...

Thanks.

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