feat(core): impl maybe_with_colon

diff --git a/core/src/apps/solana/layout.py b/core/src/apps/solana/layout.py
index 4798b6d1..ef3dfcc3 100644
--- a/core/src/apps/solana/layout.py
+++ b/core/src/apps/solana/layout.py
@@ -13,6 +13,7 @@ from trezor.ui.layouts import (
     show_danger,
     show_warning,
 )
+from trezor.ui.layouts.properties import maybe_with_colon
 
 from apps.common.paths import address_n_to_str
 
@@ -119,7 +120,7 @@ async def confirm_instruction(
                 f"{instruction_index}/{instructions_count}",
                 (
                     (
-                        ui_property.display_name,
+                        maybe_with_colon(ui_property.display_name),
                         property_template.format(value, *args),
                         True,
                     ),
@@ -160,7 +161,7 @@ async def confirm_instruction(
             await confirm_properties(
                 "confirm_instruction",
                 f"{instruction_index}/{instructions_count}",
-                account_data,
+                maybe_with_colon(account_data),
                 instruction.ui_name,
             )
         else:
@@ -189,7 +190,7 @@ async def confirm_instruction(
         await confirm_properties(
             "confirm_instruction",
             f"{instruction_index}/{instructions_count}",
-            signers,
+            maybe_with_colon(signers),
             instruction.ui_name,
         )
 
@@ -234,7 +235,7 @@ async def confirm_unsupported_instruction_details(
             title,
             (
                 (
-                    f"{TR.solana__instruction_data}",
+                    maybe_with_colon(TR.solana__instruction_data),
                     bytes(instruction.instruction_data),
                     True,
                 ),
@@ -267,7 +268,7 @@ async def confirm_unsupported_instruction_details(
             await confirm_properties(
                 "accounts",
                 title,
-                accounts,
+                maybe_with_colon(accounts),
             )
 
 
diff --git a/core/src/trezor/ui/layouts/properties.py b/core/src/trezor/ui/layouts/properties.py
index f90b5d46..53ce25f4 100644
--- a/core/src/trezor/ui/layouts/properties.py
+++ b/core/src/trezor/ui/layouts/properties.py
@@ -1,5 +1,7 @@
 from typing import TYPE_CHECKING
 
+from trezor import translations, utils
+
 if TYPE_CHECKING:
     from typing import Iterable, overload
 
@@ -12,6 +14,15 @@ if TYPE_CHECKING:
     @overload
     def with_colon(properties: str) -> str: ...
 
+    @overload
+    def maybe_with_colon(properties: None) -> None: ...
+    @overload
+    def maybe_with_colon(
+        properties: Iterable[StrPropertyType],
+    ) -> list[StrPropertyType]: ...
+    @overload
+    def maybe_with_colon(properties: str) -> str: ...
+
 
 class AboveThreshold:
     """Signals that an amount exceeds a threshold.
@@ -29,10 +40,23 @@ def with_colon(
 ) -> list[StrPropertyType] | str | None:
     if properties is None:
         return None
+
+    NBSP = "\u00a0"
+    separator = f"{NBSP}:" if translations.get_language() == "fr" else ":"
     if isinstance(properties, str):
         if properties:
-            return f"{properties}:"
+            return f"{properties}{separator}"
         else:
             return ""
 
-    return [((p[0] + ":" if p[0] else p[0]),) + p[1:] for p in properties]
+    return [((p[0] + separator if p[0] else p[0]),) + p[1:] for p in properties]
+
+
+def maybe_with_colon(
+    properties: Iterable[StrPropertyType] | str | None = None,
+):
+    """Add a colon to the end of the first element of each property tuple if the UI layout should have colons"""
+    if utils.UI_LAYOUT in ("BOLT", "CAESAR"):
+        return with_colon(properties)
+    else:
+        return properties